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Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability

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Prediction of rowing ergometer performance by technical and core stability parameters.

Frédéric R Simon¹, Geoffrey N Ertel¹, Youri Duchene¹

¹Développement, Adaptation et Handicap (DevAH), Faculté de Médecine, Université de Lorraine, Nancy, France.

Journal of Sports Sciences

|May 30, 2023

Summary

This summary is machine-generated.

High-level rowers can boost ergometer performance by optimizing trunk power and stability. Enhancing trunk and arm work production and timing during the drive phase are key for increased power output.

Keywords:

kinetic chain power output segments power trunk electromyography trunk kinematics

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Area of Science:

Sports Science
Biomechanics
Ergonomics

Background:

Rowing performance relies on efficient power transfer through the kinetic chain.
Understanding the contribution of different body segments to overall power is crucial for training optimization.

Purpose of the Study:

To assess how technical and core stability factors influence rowing ergometer performance.
To identify key biomechanical predictors of mean power output in elite rowers.

Main Methods:

Twenty-four elite rowers were evaluated on an instrumented rowing ergometer.
Leg, trunk, and arm power outputs were measured, alongside 3D trunk and pelvis kinematics.
Linear mixed models were used to analyze the relationships between variables.

Main Results:

Mean power output at the handle was strongly predicted by the combined power of legs, trunk, and arms (R²=0.99).
Trunk power emerged as the most significant predictor of overall performance.
Technical parameters like time to peak power and work ratios, and greater trunk range of motion, positively influenced power production.

Conclusions:

The trunk plays a pivotal role as a power generator in the leg-arm kinetic chain during rowing.
Training recommendations include focusing on earlier peak power, enhanced trunk and arm work, and balanced power distribution throughout the drive phase.
Optimizing core stability and technical execution can significantly improve rowing ergometer power output.